NO TROPICAL HOTSPOT MEANS CO2 CAUSED WARMING IS HIGHLY EXAGGERATED

This paper gives a clear look into the evidence for CO2 caused global warming. It finds no evidence of any tropical hotspot, which is the one clear signal that the planet is warming due to CO2 emissions. This result means that there is no risk from increasing levels of CO2 up to the present, hence any effect from it is likely to be small.